User:Guy/Splat/Spells/Rusting Grasp

Rusting Grasp

3-point evocation (acid)
Casting time:	action
Range:	touch
Components:	V, S
Duration:	instant

Your touch rapidly eats away at metal and other manufactured objects. Make a melee spell attack against a creature, or touch one unattended object (no attack roll required). On a hit, the target takes 3d12 acid damage.
 If the hit target is a construct or a manufactured object, this damage is maximized, and if such a the target is reduced to 0 hit points it melts into an unrecognizable heap that cannot be repaired through nonmagical means.
 If the target is a creature wearing common armor, after the target takes damage the AC provided by its armor is permanently reduced by 3, and if this would reduce the armor's AC to 10 (before adding any ability modifier), the armor is destroyed.
 Upcast. You can upcast this spell by expending extra spell points when you cast it. For each extra point, increase the acid damage by 1d12 and increase the AC reduction by 1.